Home / 15,718.02-21,690.27-8,644.02

Finding the Fourth Proportional to 15,718.02, 21,690.27 and 8,644.02

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Solution

The fourth proportional to 15,718.02, 21,690.27 and 8,644.02 is: 11,928.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,718.02 : 21,690.27 = 8,644.02 : x
  2. Step 2: Convert to fraction form
    15,718.02/21,690.27 = 8,644.02/x
  3. Step 3: Cross multiply
    15,718.02x = 21,690.27 × 8,644.02
  4. Step 4: Simplify right side
    15,718.02x = 187,491,127.69
  5. Step 5: Solve for x
    x = 187,491,127.69/15,718.02
  6. Step 6: Final answer
    x = 11,928.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.